Quick answers
- Which hospitals does Maria Antoniou work at?
- Medicare's official clinician data lists Maria Antoniou at 2 hospitals: Hospital of University of Pennsylvania and Pennsylvania Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maria Antoniou see patients?
- Medicare's clinician data lists 5 practice locations, including Malvern, PA, Radnor, PA and Philadelphia, PA. Call before your visit to confirm the address.
- What is Maria Antoniou's specialty?
- Medicare lists Sleep Medicine as the primary specialty, and also Pulmonary Disease.
- Does Maria Antoniou accept Medicare assignment?
- Yes. Medicare's clinician data says Maria Antoniou accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Maria Antoniou offer telehealth?
- Medicare's clinician data says Maria Antoniou offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Maria Antoniou?
- (215) 662-7772, as listed in official Medicare / NPI Registry data.
- What is Maria Antoniou's NPI number?
- 1689600504. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maria Antoniou works
Medicare's Facility Affiliation Data lists Maria Antoniou at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
- Pennsylvania HospitalPhiladelphia, PA · Acute Care Hospital · CCN 390226
Practice locations
Addresses where Maria Antoniou is enrolled with Medicare (CMS data updated 2026-10-02).
- 12 E Swedesford Rd, Sleep Center MalvernMalvern, PA 19355 (215) 662‑7772
- 145 King of Prussia RdRadnor, PA 19087 (610) 902‑4860
- 3549 Chestnut St, Fl 9Philadelphia, PA 19104 (215) 662‑7772
- 3624 Market St, Fl 2Philadelphia, PA 19104 (215) 662‑7772
- 800 Spruce StPhiladelphia, PA 19107 (215) 829‑5027
Group practices
Medicare enrollment lists Maria Antoniou as a member of this group (CMS data updated 2026-10-02).
- University of Penn - Medical Group3,505 clinicians in the group
Specialties
- Sleep Medicineprimary
- Pulmonary Diseasealso
Other sleep medicine doctors in Malvern
Clinicians with the same Medicare primary specialty in Malvern, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1992 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1689600504 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians